摘要
Abstract
This paper mainly introduces the related content of the construction of steps of tunnel with soft surrounding rock, analyzes the deformation characteristics of the springs of the arch, and discusses the effective control technology of the st- ability of the springs of the arch in step construction, in order to protect the construction level of the construction of steps of tunnel with soft surrounding rock to increase the construction quality and efficiency.关键词
软弱围岩隧道/台阶施工/拱脚稳定性/控制技术Key words
Tunnel with soft surrounding rock/construction of foot steps/stability of spring of arch/control technology
